N150 Wireless ADSL2+ Modem Router DGN1000Bv3

Port Forwarding and Port Triggering

By default, the modem router blocks inbound traffic from the Internet to your computers except replies to your outbound traffic. You might need to create exceptions to this rule for these purposes:

To enable remote computers on the Internet to access a server on your local network.

To enable certain applications and games to work correctly if the modem router does not recognize their replies.

Your modem router provides two features for creating these exceptions: port forwarding and port triggering. The next sections provide background information to help you understand how port forwarding and port triggering work, and the differences between the two.

Remote Computer Access Basics

When a computer on your network needs to access a computer on the Internet, your computer sends your modem router a message containing the source and destination address and process information. Before forwarding your message to the remote computer, your modem router has to modify the source information and create and track the communication session so that replies can be routed back to your computer.

Here is an example of normal outbound traffic and the resulting inbound responses:

1.You open a browser, and your operating system assigns port number 5678 to this browser session.

2.You type http://www.example.com into the URL field, and your computer creates a web page request message with the following address and port information. The request message is sent to your modem router:

Source address. Your computer’s IP address

Source port number. 5678, which is the browser session

Destination address. The IP address of www.example.com, which your computer finds by asking a DNS server

Destination port number. 80, which is the standard port number for a web server process

3.Your modem router creates an entry in its internal session table describing this communication session between your computer and the web server at www.example.com. Before sending the web page request message to www.example.com, your modem router stores the original information and then modifies the source information in the request message, performing Network Address Translation (NAT):

The source address is replaced with your modem router’s public IP address. This requirement is necessary because your computer uses a private IP address that is not globally unique and cannot be used on the Internet.

The source port number is changed to a number chosen by the modem router, such as 33333. This requirement is necessary because two computers might independently be using the same session number.

Advanced Settings

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NETGEAR DGN100Bv3 user manual Port Forwarding and Port Triggering, Remote Computer Access Basics

DGN100Bv3 specifications

The NETGEAR DGN100Bv3 is a versatile and feature-rich ADSL2+ modem router that is designed to cater to the needs of home users and small offices. By combining a high-performance modem and router in one compact device, it significantly simplifies the network setup, reducing the need for multiple devices and management points.

One of the standout features of the DGN100Bv3 is its ADSL2+ compatibility, allowing users to connect to various DSL internet service providers efficiently. This modem/router supports downstream rates of up to 24 Mbps and upstream rates of up to 1 Mbps, providing a robust solution for everyday browsing, streaming, and online gaming.

Equipped with 4 10/100 Ethernet ports, the DGN100Bv3 allows multiple devices to connect via wired connections, providing reliable and fast speeds for activities that demand stable internet access. Additionally, it features integrated wireless 802.11n technology, which enables users to create a secure Wi-Fi network with wireless speeds of up to 300 Mbps. This makes it ideal for multiple users who are streaming videos, engaging in video calls, or downloading large files simultaneously.

Security is also a key focus in the DGN100Bv3 design, offering comprehensive security features such as a robust firewall, WPA/WPA2 wireless security protocols, and support for Network Address Translation (NAT). This ensures that the network remains secure against external threats, giving users peace of mind.

Configuration and management of the DGN100Bv3 are straightforward, thanks to an intuitive web interface accessible via a browser. Users can easily set up parental controls, traffic prioritization, and network settings to optimize their experience. Additionally, the device supports Quality of Service (QoS), which helps manage bandwidth allocation for different applications, ensuring that critical services receive the necessary resources for optimal performance.

In summary, the NETGEAR DGN100Bv3 is a robust and efficient modem router that combines high-speed connectivity with ease of use, security, and management features. Its combination of ADSL2+ capabilities and wireless technology makes it a great choice for home users seeking reliable internet access and effective network management. Whether for casual browsing or demanding online activities, the DGN100Bv3 delivers a reliable and powerful solution suitable for diverse networking needs.